world_gen.h

   1 /*
   2  * Copyright (C) 2021-2022 Mt.ZERO Software, Harry Godden - All Rights Reserved
   3  */
   4
   5 #ifndef WORLD_GEN_H
   6 #define WORLD_GEN_H
   7
   8 #include "world.h"
   9
  10 /* load world TODO: Put back vg back in loading state while this happens */
  11 VG_STATIC void world_load(void);
  12
  13
  14 VG_STATIC void world_add_all_if_material( m4x3f transform, scene *pscene,
  15                                           mdl_context *mdl, u32 id )
  16 {
  17    for( int i=0; i<mdl->info.node_count; i++ )
  18    {
  19       mdl_node *pnode = mdl_node_from_id( mdl, i );
  20
  21       for( int j=0; j<pnode->submesh_count; j++ )
  22       {
  23          mdl_submesh *sm = mdl_node_submesh( mdl, pnode, j );
  24          if( sm->material_id == id )
  25          {
  26             m4x3f transform2;
  27             mdl_node_transform( pnode, transform2 );
  28             m4x3_mul( transform, transform2, transform2 );
  29
  30             scene_add_mdl_submesh( pscene, mdl, sm, transform2 );
  31          }
  32       }
  33    }
  34 }
  35
  36 VG_STATIC void world_add_blob( scene *pscene, ray_hit *hit )
  37 {
  38    m4x3f transform;
  39    v4f qsurface, qrandom;
  40    v3f axis;
  41
  42    v3_cross( (v3f){0.0f,1.0f,0.0f}, hit->normal, axis );
  43
  44    float angle = v3_dot(hit->normal,(v3f){0.0f,1.0f,0.0f});
  45    q_axis_angle( qsurface, axis, angle );
  46    q_axis_angle( qrandom, (v3f){0.0f,1.0f,0.0f}, vg_randf()*VG_TAUf );
  47    q_mul( qsurface, qrandom, qsurface );
  48    q_m3x3( qsurface, transform );
  49    v3_copy( hit->pos, transform[3] );
  50
  51    scene_vert verts[] =
  52    {
  53       { .co = { -1.00f, 0.0f, 0.0f } },
  54       { .co = {  1.00f, 0.0f, 0.0f } },
  55       { .co = { -1.00f, 1.2f, 0.0f } },
  56       { .co = {  1.00f, 1.2f, 0.0f } },
  57       { .co = { -0.25f, 2.0f, 0.0f } },
  58       { .co = {  0.25f, 2.0f, 0.0f } }
  59    };
  60
  61    const u32 indices[] = { 0,1,3, 0,3,2, 2,3,5, 2,5,4 };
  62
  63    if( pscene->vertex_count + vg_list_size(verts) > pscene->max_vertices )
  64       vg_fatal_exit_loop( "Scene vertex buffer overflow" );
  65
  66    if( pscene->indice_count + vg_list_size(indices) > pscene->max_indices )
  67       vg_fatal_exit_loop( "Scene index buffer overflow" );
  68
  69    scene_vert *dst_verts = &pscene->arrvertices[ pscene->vertex_count ];
  70    u32 *dst_indices      = &pscene->arrindices [ pscene->indice_count ];
  71
  72    scene_vert *ref       = &world.scene_geo->arrvertices[ hit->tri[0] ];
  73
  74    for( u32 i=0; i<vg_list_size(verts); i++ )
  75    {
  76       scene_vert *pvert = &dst_verts[ i ],
  77                  *src   = &verts[ i ];
  78
  79       m4x3_mulv( transform, src->co, pvert->co );
  80       scene_vert_pack_norm( pvert, transform[1] );
  81
  82       v2_copy( ref->uv, pvert->uv );
  83    }
  84
  85    for( u32 i=0; i<vg_list_size(indices); i++ )
  86       dst_indices[i] = indices[i] + pscene->vertex_count;
  87
  88    pscene->vertex_count += vg_list_size(verts);
  89    pscene->indice_count += vg_list_size(indices);
  90 }
  91
  92 /* Sprinkle foliage models over the map on terrain material */
  93 VG_STATIC void world_apply_procedural_foliage( struct world_material *mat )
  94 {
  95    if( vg.quality_profile == k_quality_profile_low )
  96       return;
  97
  98    vg_info( "Applying foliage (%u)\n", mat->info.pstr_name );
  99
 100    vg_linear_clear( vg_mem.scratch );
 101
 102    mdl_context *mfoliage =
 103       mdl_load_full( vg_mem.scratch, "models/rs_foliage.mdl");
 104
 105    v3f volume;
 106    v3_sub( world.scene_geo->bbx[1], world.scene_geo->bbx[0], volume );
 107    volume[1] = 1.0f;
 108
 109    mdl_node *mblob = mdl_node_from_name( mfoliage, "blob" );
 110    mdl_submesh *sm_blob = mdl_node_submesh( mfoliage, mblob, 0 );
 111
 112    int count = 0;
 113
 114    float area = volume[0]*volume[2];
 115    u32 particles = 0.08f * area;
 116
 117    vg_info( "Map area: %f. Max particles: %u\n", area, particles );
 118
 119    for( int i=0;i<particles;i++ )
 120    {
 121       v3f pos;
 122       v3_mul( volume, (v3f){ vg_randf(), 1000.0f, vg_randf() }, pos );
 123       pos[1] = 1000.0f;
 124       v3_add( pos, world.scene_geo->bbx[0], pos );
 125
 126       ray_hit hit;
 127       hit.dist = INFINITY;
 128
 129       if( ray_world( pos, (v3f){0.0f,-1.0f,0.0f}, &hit ))
 130       {
 131          struct world_material *m1 = ray_hit_material( &hit );
 132          if((hit.normal[1] > 0.8f) && (m1 == mat) && (hit.pos[1] > 0.0f+10.0f))
 133          {
 134             world_add_blob( world.scene_no_collide, &hit );
 135             count ++;
 136          }
 137       }
 138    }
 139
 140    vg_info( "%d foliage models added\n", count );
 141 }
 142
 143 VG_STATIC void world_ents_allocate(void)
 144 {
 145    vg_info( "Allocating entities\n" );
 146
 147    /* count entites to allocate buffers for them.
 148     * maybe in the future we just store these numbers in the model file...
 149     *
 150     * TODO: use this in world_routes too */
 151
 152    struct countable
 153    {
 154       enum   classtype ct;
 155       void **to_allocate;
 156       u32    item_size;
 157       int    count;
 158    }
 159    entity_counts[] =
 160    {
 161       {
 162          k_classtype_spawn,
 163          (void*)&world.spawns,
 164          sizeof(struct respawn_point)
 165       },
 166       {
 167          k_classtype_audio,
 168          (void*)&world.audio_things,
 169          sizeof(struct world_audio_thing)
 170       },
 171       {
 172          k_classtype_trigger,
 173          (void*)&world.triggers,
 174          sizeof(struct trigger_zone)
 175       },
 176       {
 177          k_classtype_logic_relay,
 178          (void*)&world.logic_relays,
 179          sizeof(struct logic_relay)
 180       },
 181       {
 182          k_classtype_logic_achievement,
 183          (void*)&world.logic_achievements,
 184          sizeof(struct logic_achievement)
 185       },
 186       {
 187          k_classtype_point_light,
 188          (void*)&world.lights,
 189          sizeof(struct world_light)
 190       }
 191    };
 192
 193    for( int i=0; i<vg_list_size(entity_counts); i++ )
 194       entity_counts[i].count = 0;
 195
 196    for( int i=0; i<world.meta->info.node_count; i++ )
 197    {
 198       mdl_node *pnode = mdl_node_from_id( world.meta, i );
 199
 200       for( int j=0; j<vg_list_size(entity_counts); j ++ )
 201       {
 202          if( pnode->classtype == entity_counts[j].ct )
 203          {
 204             pnode->sub_uid = entity_counts[j].count;
 205             entity_counts[j].count ++;
 206             break;
 207          }
 208       }
 209    }
 210
 211    for( int i=0; i<vg_list_size(entity_counts); i++ )
 212    {
 213       struct countable *counter = &entity_counts[i];
 214
 215       u32 bufsize = counter->item_size*counter->count;
 216       *counter->to_allocate = vg_linear_alloc( world.dynamic_vgl, bufsize );
 217    }
 218 }
 219
 220 VG_STATIC void world_pct_spawn( mdl_node *pnode )
 221 {
 222    struct respawn_point *rp = &world.spawns[ world.spawn_count ++ ];
 223
 224    v3_copy( pnode->co, rp->co );
 225    v4_copy( pnode->q, rp->q );
 226    rp->name = mdl_pstr( world.meta, pnode->pstr_name );
 227 }
 228
 229 VG_STATIC void world_pct_water( mdl_node *pnode )
 230 {
 231    if( world.water.enabled )
 232    {
 233       vg_warn( "Multiple water surfaces in level! ('%s')\n",
 234                mdl_pstr( world.meta, pnode->pstr_name ));
 235       return;
 236    }
 237
 238    world.water.enabled = 1;
 239    water_set_surface( pnode->co[1] );
 240 }
 241
 242 VG_STATIC void world_pct_audio( mdl_node *pnode )
 243 {
 244    struct world_audio_thing *thing = &world.audio_things[
 245                                       world.audio_things_count ];
 246
 247    memset( thing, 0, sizeof(struct world_audio_thing) );
 248    struct classtype_audio *aud = mdl_get_entdata( world.meta, pnode );
 249
 250    v3_copy( pnode->co, thing->pos );
 251
 252    if( aud->flags & AUDIO_FLAG_SPACIAL_3D )
 253       thing->volume = aud->volume * pnode->s[0];
 254    else
 255       thing->volume = aud->volume;
 256
 257    thing->flags = aud->flags;
 258    thing->temp_embedded_clip.path = mdl_pstr( world.meta, aud->pstr_file );
 259    thing->temp_embedded_clip.source_mode = k_audio_source_mono;
 260
 261    audio_clip_load( &thing->temp_embedded_clip, world.audio_vgl );
 262    thing->player.name = mdl_pstr( world.meta, pnode->pstr_name );
 263    thing->player.enqued = 0;
 264
 265    pnode->sub_uid = world.audio_things_count;
 266    world.audio_things_count ++;
 267 }
 268
 269
 270 VG_STATIC void world_pct_trigger( mdl_node *pnode )
 271 {
 272    struct trigger_zone *trigger = &world.triggers[ world.trigger_count ];
 273    struct classtype_trigger *inf = mdl_get_entdata( world.meta, pnode );
 274
 275    if( inf->target )
 276    {
 277       mdl_node *target_node = mdl_node_from_id( world.meta, inf->target );
 278
 279       trigger->target.sub_id = target_node->sub_uid;
 280       trigger->target.classtype = target_node->classtype;
 281    }
 282    else
 283    {
 284       vg_warn( "Trigger with no target...\n" );
 285       return;
 286    }
 287
 288    mdl_node_transform( pnode, trigger->transform );
 289    m4x3_invert_full( trigger->transform, trigger->inv_transform );
 290
 291    world.trigger_count ++;
 292 }
 293
 294
 295 VG_STATIC void world_pct_relay( mdl_node *pnode )
 296 {
 297    struct logic_relay *relay = &world.logic_relays[ world.relay_count ];
 298    struct classtype_logic_relay *inf = mdl_get_entdata( world.meta, pnode );
 299
 300    relay->target_count = 0;
 301
 302    for( int i=0; i<vg_list_size(relay->targets); i++ )
 303    {
 304       if( inf->targets[i] )
 305       {
 306          struct relay_target *target = &relay->targets[relay->target_count ++];
 307          mdl_node *other = mdl_node_from_id( world.meta, inf->targets[i] );
 308
 309          target->classtype = other->classtype;
 310          target->sub_id = other->sub_uid;
 311       }
 312    }
 313
 314    v3_copy( pnode->co, relay->pos );
 315    world.relay_count ++;
 316 }
 317
 318
 319 VG_STATIC void world_pct_achievement( mdl_node *pnode )
 320 {
 321    struct logic_achievement *ach =
 322       &world.logic_achievements[ world.achievement_count ];
 323    struct classtype_logic_achievement *inf =
 324       mdl_get_entdata( world.meta, pnode );
 325
 326    v3_copy( pnode->co, ach->pos );
 327    ach->achievement_id = mdl_pstr( world.meta, inf->pstr_name );
 328    ach->achieved = 0;
 329
 330    world.achievement_count ++;
 331 }
 332
 333 VG_STATIC void world_pct_point_light( mdl_node *pnode )
 334 {
 335    struct world_light *light = &world.lights[ world.light_count ];
 336    v3_copy( pnode->co, light->co );
 337
 338    struct classtype_point_light *inf = mdl_get_entdata( world.meta, pnode );
 339    v4_copy( inf->colour, light->colour );
 340
 341    world.light_count ++;
 342 }
 343
 344 VG_STATIC void world_entities_process(void)
 345 {
 346    struct entity_instruction
 347    {
 348       enum classtype ct;
 349       void (*process)( mdl_node *pnode );
 350    }
 351    entity_instructions[] =
 352    {
 353       { k_classtype_spawn,    world_pct_spawn },
 354       { k_classtype_water,    world_pct_water },
 355       { k_classtype_audio,    world_pct_audio },
 356       { k_classtype_trigger,  world_pct_trigger },
 357       { k_classtype_logic_relay, world_pct_relay },
 358       { k_classtype_logic_achievement, world_pct_achievement },
 359       { k_classtype_point_light, world_pct_point_light }
 360    };
 361
 362    for( int i=0; i<world.meta->info.node_count; i++ )
 363    {
 364       mdl_node *pnode = mdl_node_from_id( world.meta, i );
 365
 366       for( int j=0; j<vg_list_size(entity_instructions); j++ )
 367       {
 368          struct entity_instruction *instr = &entity_instructions[j];
 369
 370          if( pnode->classtype == instr->ct )
 371          {
 372             instr->process( pnode );
 373             break;
 374          }
 375       }
 376    }
 377 }
 378
 379 VG_STATIC void world_scene_compute_light_clusters( scene *sc )
 380 {
 381    for( int i=0; i<sc->vertex_count; i++ )
 382    {
 383       scene_vert *vert = &sc->arrvertices[i];
 384       vert->lights[0] = 255;
 385       vert->lights[1] = 255;
 386       vert->lights[2] = 255;
 387       vert->lights[3] = 255;
 388
 389       float distances[4] = { INFINITY, INFINITY, INFINITY, INFINITY };
 390
 391       for( int j=0; j<world.light_count; j ++ )
 392       {
 393          float dist = v3_dist2( world.lights[j].co, vert->co );
 394
 395          int best_pos = 4;
 396          for( int k=best_pos-1; k>=0; k -- )
 397             if( dist < distances[k] )
 398                best_pos = k;
 399
 400          if( best_pos < 4 )
 401          {
 402             for( int k=3; k>best_pos; k -- )
 403             {
 404                distances[k] = distances[k-1];
 405                vert->lights[k] = vert->lights[k-1];
 406             }
 407
 408             distances[best_pos] = dist;
 409             vert->lights[best_pos] = j;
 410          }
 411       }
 412    }
 413 }
 414
 415 VG_STATIC void world_generate(void)
 416 {
 417    /*
 418     * Compile meshes into the world scenes
 419     */
 420    world.scene_geo = scene_init( world.dynamic_vgl, 320000, 1200000 );
 421
 422    m4x3f midentity;
 423    m4x3_identity( midentity );
 424
 425    /*
 426     * Generate scene: collidable geometry
 427     * ----------------------------------------------------------------
 428     */
 429
 430    vg_info( "Generating collidable geometry\n" );
 431
 432
 433    for( int i=0; i<world.material_count; i++ )
 434    {
 435       struct world_material *mat = &world.materials[ i ];
 436
 437       if( mat->info.flags & k_material_flag_collision )
 438          world_add_all_if_material( midentity, world.scene_geo, world.meta, i );
 439
 440       scene_copy_slice( world.scene_geo, &mat->sm_geo );
 441    }
 442    world_scene_compute_light_clusters( world.scene_geo );
 443
 444    /* compress that bad boy */
 445    world.scene_geo = scene_fix( world.dynamic_vgl, world.scene_geo );
 446
 447    vg_acquire_thread_sync();
 448    {
 449       scene_upload( world.scene_geo, &world.mesh_geo );
 450    }
 451    vg_release_thread_sync();
 452
 453    /* setup spacial mapping and rigidbody */
 454    world.geo_bh = scene_bh_create( world.dynamic_vgl, world.scene_geo );
 455
 456    v3_zero( world.rb_geo.co );
 457    q_identity( world.rb_geo.q );
 458
 459    world.rb_geo.type = k_rb_shape_scene;
 460    world.rb_geo.inf.scene.bh_scene = world.geo_bh;
 461    world.rb_geo.is_world = 1;
 462    rb_init( &world.rb_geo );
 463
 464    /*
 465     * Generate scene: non-collidable geometry
 466     * ----------------------------------------------------------------
 467     */
 468    vg_info( "Generating non-collidable geometry\n" );
 469
 470    world.scene_no_collide = scene_init( world.dynamic_vgl, 200000, 500000 );
 471
 472    for( int i=0; i<world.material_count; i++ )
 473    {
 474       struct world_material *mat = &world.materials[ i ];
 475
 476       if( !(mat->info.flags & k_material_flag_collision) )
 477       {
 478          world_add_all_if_material( midentity, world.scene_no_collide,
 479                                     world.meta, i );
 480       }
 481
 482       if( mat->info.flags & k_material_flag_grow_grass )
 483          world_apply_procedural_foliage( mat );
 484
 485       scene_copy_slice( world.scene_no_collide, &mat->sm_no_collide );
 486    }
 487    world_scene_compute_light_clusters( world.scene_no_collide );
 488
 489    /* upload and free that */
 490    vg_acquire_thread_sync();
 491    {
 492       scene_upload( world.scene_no_collide, &world.mesh_no_collide );
 493    }
 494    vg_release_thread_sync();
 495
 496    vg_linear_del( world.dynamic_vgl, world.scene_no_collide );
 497    world.scene_no_collide = NULL;
 498 }
 499
 500 VG_STATIC int reset_player( int argc, char const *argv[] );
 501 VG_STATIC void world_post_process(void)
 502 {
 503    /* initialize audio if need be */
 504    audio_lock();
 505    for( int i=0; i<world.audio_things_count; i++ )
 506    {
 507       struct world_audio_thing *thingy = &world.audio_things[ i ];
 508
 509       audio_player_init( &thingy->player );
 510       audio_player_set_flags( &thingy->player, thingy->flags );
 511       audio_player_set_vol( &thingy->player, thingy->volume );
 512       audio_player_set_pan( &thingy->player, 0.0f );
 513
 514       if( thingy->flags & AUDIO_FLAG_SPACIAL_3D )
 515          audio_player_set_position( &thingy->player, thingy->pos );
 516
 517       if( thingy->flags & AUDIO_FLAG_AUTO_START )
 518          audio_player_playclip( &thingy->player, &thingy->temp_embedded_clip );
 519    }
 520    audio_unlock();
 521
 522    vg_acquire_thread_sync();
 523    {
 524       /*
 525        * Rendering the depth map
 526        */
 527       camera ortho;
 528
 529       v3f extent;
 530       v3_sub( world.scene_geo->bbx[1], world.scene_geo->bbx[0], extent );
 531
 532       float fl = world.scene_geo->bbx[0][0],
 533             fr = world.scene_geo->bbx[1][0],
 534             fb = world.scene_geo->bbx[0][2],
 535             ft = world.scene_geo->bbx[1][2],
 536             rl = 1.0f / (fr-fl),
 537             tb = 1.0f / (ft-fb);
 538
 539       m4x4_zero( ortho.mtx.p );
 540       ortho.mtx.p[0][0] = 2.0f * rl;
 541       ortho.mtx.p[2][1] = 2.0f * tb;
 542       ortho.mtx.p[3][0] = (fr + fl) * -rl;
 543       ortho.mtx.p[3][1] = (ft + fb) * -tb;
 544       ortho.mtx.p[3][3] = 1.0f;
 545       m4x3_identity( ortho.transform );
 546       camera_update_view( &ortho );
 547       camera_finalize( &ortho );
 548
 549       glDisable(GL_DEPTH_TEST);
 550       glDisable(GL_BLEND);
 551       glDisable(GL_CULL_FACE);
 552       render_fb_bind( gpipeline.fb_heightmap );
 553       shader_blitcolour_use();
 554       shader_blitcolour_uColour( (v4f){-9999.0f,-9999.0f,-9999.0f,-9999.0f} );
 555       render_fsquad();
 556
 557       /* todo: hmm?? */
 558       glEnable(GL_BLEND);
 559       glBlendFunc(GL_ONE, GL_ONE);
 560       glBlendEquation(GL_MAX);
 561
 562       render_world_depth( &ortho );
 563       glDisable(GL_BLEND);
 564       glEnable(GL_DEPTH_TEST);
 565       glBindFramebuffer( GL_FRAMEBUFFER, 0 );
 566
 567       /*
 568        * TODO: World settings entity
 569        */
 570       struct ub_world_lighting *winfo = &gpipeline.ub_world_lighting;
 571
 572       if( world.water.enabled )
 573          v4_copy( world.water.plane, winfo->g_water_plane );
 574
 575       v4f info_vec;
 576       v3f *bounds = world.scene_geo->bbx;
 577
 578       info_vec[0] = bounds[0][0];
 579       info_vec[1] = bounds[0][2];
 580       info_vec[2] = 1.0f/ (bounds[1][0]-bounds[0][0]);
 581       info_vec[3] = 1.0f/ (bounds[1][2]-bounds[0][2]);
 582       v4_copy( info_vec, winfo->g_depth_bounds );
 583
 584       winfo->g_water_fog = 0.04f;
 585
 586       for( int i=0; i<world.light_count; i++ )
 587       {
 588          struct world_light *light = &world.lights[i];
 589
 590          v3_muls( light->colour, light->colour[3] * 2.0f,
 591                   gpipeline.ub_world_lighting.g_point_light_colours[i] );
 592          v3_copy( light->co,
 593                   gpipeline.ub_world_lighting.g_point_light_positions[i] );
 594       }
 595
 596       render_update_lighting_ub();
 597    }
 598
 599    vg_release_thread_sync();
 600
 601 #if 0
 602    /*
 603     * Setup scene collider
 604     */
 605    reset_player( 1, (const char *[]){"start"} );
 606 #endif
 607 }
 608
 609 VG_STATIC void world_process_resources(void)
 610 {
 611    vg_info( "Loading textures\n" );
 612    world.texture_count = world.meta->info.texture_count;
 613    world.textures =
 614       vg_linear_alloc( world.dynamic_vgl, sizeof(GLuint)*world.texture_count );
 615
 616    vg_acquire_thread_sync();
 617    {
 618       /* error texture */
 619       world.textures[0] = vg_tex2d_new();
 620       vg_tex2d_set_error();
 621       vg_tex2d_nearest();
 622       vg_tex2d_repeat();
 623
 624       for( int i=1; i<world.texture_count; i++ )
 625       {
 626          mdl_texture *tex = &world.meta->texture_buffer[i];
 627
 628          if( !tex->pack_offset )
 629          {
 630             vg_release_thread_sync();
 631             vg_fatal_exit_loop( "World models must have packed textures!" );
 632          }
 633
 634          vg_linear_clear( vg_mem.scratch );
 635          world.textures[i] = vg_tex2d_new();
 636          vg_tex2d_set_error();
 637          vg_tex2d_qoi( world.meta->pack + tex->pack_offset, tex->pack_length,
 638                        mdl_pstr( world.meta, tex->pstr_name ));
 639          vg_tex2d_nearest();
 640          vg_tex2d_repeat();
 641       }
 642    }
 643    vg_release_thread_sync();
 644
 645    vg_info( "Loading materials\n" );
 646
 647    u32 size = sizeof(struct world_material) * world.meta->info.material_count;
 648    world.materials = vg_linear_alloc( world.dynamic_vgl, size );
 649
 650    world.material_count = world.meta->info.material_count;
 651    memset( world.materials, 0, size );
 652
 653    for( int i=1; i<world.material_count; i++ )
 654       world.materials[i].info = world.meta->material_buffer[i];
 655
 656    /* error material */
 657    struct world_material *errmat = &world.materials[0];
 658    v4_copy( (v4f){ 1.0f,0.0f,0.0f,1.0f }, errmat->info.colour );
 659    v4_copy( (v4f){ 1.0f,0.0f,0.0f,1.0f }, errmat->info.colour1 );
 660    errmat->info.flags = 0x00;
 661    errmat->info.pstr_name = 0; /* useless? */
 662    errmat->info.shader = -1;
 663    errmat->info.tex_decal = 0;
 664    errmat->info.tex_diffuse = 0;
 665    errmat->info.tex_normal = 0;
 666 }
 667
 668 VG_STATIC void world_unload(void)
 669 {
 670    vg_acquire_thread_sync();
 671
 672    /* free meshes */
 673    mesh_free( &world.mesh_route_lines );
 674    mesh_free( &world.mesh_geo );
 675    mesh_free( &world.mesh_no_collide );
 676
 677    world.time = 0.0;
 678    world.rewind_from = 0.0;
 679    world.rewind_to = 0.0;
 680    world.last_use = 0.0;
 681    world.active_gate = 0;
 682    world.current_run_version = 2;
 683    world.active_route_board = 0;
 684    v3_zero( world.render_gate_pos );
 685
 686    for( int i=0; i<vg_list_size(world.ui_bars); i++ )
 687    {
 688       struct route_ui_bar *uib = &world.ui_bars[i];
 689       uib->segment_start = 0;
 690       uib->segment_count = 0;
 691       uib->fade_start = 0;
 692       uib->fade_count = 0;
 693       uib->fade_timer_start = 0.0;
 694       uib->xpos = 0.0f;
 695    }
 696
 697    /* delete textures and meshes */
 698    glDeleteTextures( world.texture_count, world.textures );
 699
 700    /* delete the entire block of memory */
 701    vg_linear_clear( world.dynamic_vgl );
 702    vg_linear_clear( world.audio_vgl );
 703
 704    /* clean dangling pointers */
 705    world.meta = NULL;
 706
 707    world.textures = NULL;
 708    world.texture_count = 0;
 709    world.materials = NULL;
 710    world.material_count = 0;
 711
 712    world.scene_geo = NULL;
 713    world.scene_no_collide = NULL;
 714    world.scene_lines = NULL;
 715
 716    world.geo_bh = NULL;
 717    world.trigger_bh = NULL;
 718    world.audio_bh = NULL;
 719
 720    world.spawns = NULL;
 721    world.spawn_count = 0;
 722
 723    world.audio_things = NULL;
 724    world.audio_things_count = 0;
 725
 726    world.triggers = NULL;
 727    world.trigger_count = 0;
 728
 729    world.lights = NULL;
 730    world.light_count = 0;
 731
 732    world.logic_relays = NULL;
 733    world.relay_count = 0;
 734
 735    world.logic_achievements = NULL;
 736    world.achievement_count = 0;
 737
 738    world.nodes = NULL;
 739    world.node_count = 0;
 740
 741    world.routes = NULL;
 742    world.route_count = 0;
 743
 744    world.gates = NULL;
 745    world.gate_count = 0;
 746
 747    world.collectors = NULL;
 748    world.collector_count = 0;
 749
 750    world.water.enabled = 0;
 751
 752    vg_release_thread_sync();
 753 }
 754
 755 VG_STATIC void world_load(void)
 756 {
 757    world_unload();
 758
 759    world.meta = mdl_load_full( world.dynamic_vgl, world.world_name );
 760    vg_info( "Loading world: %s\n", world.world_name );
 761
 762    /* process resources from pack */
 763    world_process_resources();
 764
 765    /* dynamic allocations */
 766    world_ents_allocate();
 767    world_routes_allocate();
 768
 769    /* meta processing */
 770    world_routes_process();
 771    world_entities_process();
 772
 773    /* main bulk */
 774    world_generate();
 775    world_routes_generate();
 776    world_post_process();
 777 }
 778
 779 #endif /* WORLD_GEN_H */